Plain_Bread t1_jeemogj wrote on March 31, 2023 at 1:39 PM

Reply to comment by ItsACaragor in Eli5 why does a survey need to have a minimum of 30 respondees to be statistically significant? by shashwathj

Any sample that is truly taken at random is representative. The question is how narrow of a confidence interval you're looking for. At a sample size of 500, your 95% confidence interval for the proportion of people who answer "yes" to a question can span up to ~10%. If that's good enough for you then there's nothing wrong with that sample size.